import React, { useEffect, useId } from "react";
import styles from './index.module.less'
import 'echarts-gl' 
import * as echarts from 'echarts/core';
import {
    PieChart,
    // 系列类型的定义后缀都为 SeriesOption
    PieSeriesOption,
} from 'echarts/charts';
import {
    TitleComponent,
    // 组件类型的定义后缀都为 ComponentOption
    TitleComponentOption,
    TooltipComponent,
    TooltipComponentOption,
    GridComponent,
    GridComponentOption,
    // 数据集组件
    DatasetComponent,
    DatasetComponentOption,
    // 内置数据转换器组件 (filter, sort)
    TransformComponent,
    LegendComponent,

} from 'echarts/components';
import { LabelLayout, UniversalTransition } from 'echarts/features';
import { CanvasRenderer } from 'echarts/renderers';
// 通过 ComposeOption 来组合出一个只有必须组件和图表的 Option 类型
type ECOption = echarts.ComposeOption<
    | PieSeriesOption
    | TitleComponentOption
    | TooltipComponentOption
    | GridComponentOption
    | DatasetComponentOption
>;

// 注册必须的组件
echarts.use([
    TitleComponent,
    TooltipComponent,
    GridComponent,
    DatasetComponent,
    TransformComponent,
    PieChart,
    LabelLayout,
    UniversalTransition,
    CanvasRenderer,
    LegendComponent
]);



interface PieProps {
    data: any[],
    url: string
}
// 生成扇形的曲面参数方程
function getParametricEquation(startRatio, endRatio, isSelected, isHovered, k,height) {

    // 计算
    let midRatio = (startRatio + endRatio) / 2;

    let startRadian = startRatio * Math.PI * 2;
    let endRadian = endRatio * Math.PI * 2;
    let midRadian = midRatio * Math.PI * 2;

    // 如果只有一个扇形，则不实现选中效果。
    if (startRatio === 0 && endRatio === 1) {
        isSelected = false;
    }
    
    // 通过扇形内径/外径的值，换算出辅助参数 k（默认值 1/3）
    k = typeof k !== 'undefined' ? k : 1 / 3 ;
    
    // 计算选中效果分别在 x 轴、y 轴方向上的位移（未选中，则位移均为 0）
    let offsetX = isSelected ? Math.cos(midRadian) * 0.1 : 0;
    let offsetY = isSelected ? Math.sin(midRadian) * 0.1 : 0;

    // 计算高亮效果的放大比例（未高亮，则比例为 1）
    let hoverRate = isHovered ? 1.05 : 1;

    // 返回曲面参数方程
    return {

        u: {
            min: -Math.PI,
            max: Math.PI * 3,
            step: Math.PI / 32
        },
        
        v: {
            min: 0,
            max: Math.PI * 2,
            step: Math.PI / 20
        },
        
        x: function(u, v) {
            if (u < startRadian) {
                return offsetX + Math.cos(startRadian) * (1 + Math.cos(v) * k) * hoverRate;
            }
            if (u > endRadian ){
                return offsetX + Math.cos(endRadian) * (1 + Math.cos(v) * k) * hoverRate;
            }
            return offsetX + Math.cos(u) * (1 + Math.cos(v) * k) * hoverRate;
        },
        
        y: function(u, v) {
            if (u < startRadian) {
                return offsetY + Math.sin(startRadian) * (1 + Math.cos(v) * k) * hoverRate;
            }
            if (u > endRadian ){
                return offsetY + Math.sin(endRadian) * (1 + Math.cos(v) * k) * hoverRate;
            }
            return offsetY + Math.sin(u) * (1 + Math.cos(v) * k) * hoverRate;
        },
        
        z: function(u, v) {
            if (u < - Math.PI * 0.5 ) {
                return Math.sin(u);
            }
            if (u > Math.PI * 2.5 ){
                return Math.sin(u);
            }
            return Math.sin(v) > 0 ? 1*height : -1;
        }
    };
}

// 生成模拟 3D 饼图的配置项
function getPie3D(pieData, internalDiameterRatio) {

    let series = [];
    let sumValue = 0;
    let startValue = 0;
    let endValue = 0;
    let legendData = [];
    let k = typeof internalDiameterRatio !== 'undefined' ? (1 - internalDiameterRatio) / (1 + internalDiameterRatio): 1 / 3;

    // 为每一个饼图数据，生成一个 series-surface 配置
    for (let i = 0; i < pieData.length; i++) {

        sumValue += pieData[i].value;

        let seriesItem = {
            name: typeof pieData[i].name === 'undefined' ? `series${i}` : pieData[i].name,
            type: 'surface',
            parametric: true,
            wireframe: {
                show: false
            },
            label: {
                opacity: 1,
                fontSize: 13,
                lineHeight: 20,
                textStyle: {
                            fontSize: 22,
                        },
            },
            labelLine: {
                
                length: 60,
                length2: 60,
            },
            pieData: pieData[i],
            pieStatus: {
                selected: false,
                hovered: false,
                k: k
            }
        };

        if (typeof pieData[i].itemStyle != 'undefined') {

            let itemStyle = {};

            typeof pieData[i].itemStyle.color != 'undefined' ? itemStyle.color = pieData[i].itemStyle.color : null;
            typeof pieData[i].itemStyle.opacity != 'undefined' ? itemStyle.opacity = pieData[i].itemStyle.opacity : null;

            seriesItem.itemStyle = itemStyle;
        }
        series.push(seriesItem);
    }

    // 使用上一次遍历时，计算出的数据和 sumValue，调用 getParametricEquation 函数，
    // 向每个 series-surface 传入不同的参数方程 series-surface.parametricEquation，也就是实现每一个扇形。
    for (let i = 0; i < series.length; i++) {
        endValue = startValue + series[i].pieData.value;
        series[i].pieData.startRatio = startValue / sumValue;
        series[i].pieData.endRatio = endValue / sumValue;
        series[i].parametricEquation = getParametricEquation(series[i].pieData.startRatio, series[i].pieData.endRatio, false, false, k,series[i].pieData.value);

        startValue = endValue;

        legendData.push(series[i].name);
    }

    

    // 准备待返回的配置项，把准备好的 legendData、series 传入。
    let option = {
        tooltip: {
            formatter: params => {
                if (params.seriesName !== 'mouseoutSeries') {
                    return `${params.seriesName}<br/><span style="display:inline-block;margin-right:5px;border-radius:10px;width:10px;height:10px;background-color:${params.color};"></span>${option.series[params.seriesIndex].pieData.value}`;
                }
            }
        },
        labelLine: {
            show: true,
            // lineStyle: {
            //     color: '#7BC0CB',
            // },
        },
        label: {
            show: true,
            position: 'outside',
            formatter: '{b} \n{c} {d}%',
        },
        legend: {
            data: legendData,
            textStyle:{
                color:'#fff',
                fontSize:26
            }
        },
        xAxis3D: {
            min: -1,
            max: 1
        },
        yAxis3D: {
            min: -1,
            max: 1
        },
        zAxis3D: {
            min: -1,
            max: 1
        },
        grid3D: {
            show: false,
            boxHeight: 20,
            //top: '30%',
            bottom: '50%',
            // environment: 'transparent',
            viewControl:{
                distance:300,
                alpha:25,
                beta:130,
            },
            
        },
        series: series
    };
    return option;
}

const PieWidget = (props: PieProps) => {
    let chart = null
    const { url, data } = props
    // const ref = useRef(null)
    const id = useId()
    // const ref = useRef(document.getElementById('chart'))

    useEffect(() => {
        // console.log(ref);
        // const data = 
        chart = echarts.init(document.getElementById(`${'pie_chart' + id}`));
        // console.log(first)
        if (chart) {
            let selectedIndex: any = '';
            let hoveredIndex: any = '';
            // [{
            //     name: '已消除',
            //     value: 3,
            //     itemStyle: {
            //         opacity: 0.5,
            //         color:'rgba(0,127,244,.8)',
            //     }
            // }
            
            // , {
            //     name: '未消除',
            //     value: 1,
            //     itemStyle: {
            //         opacity: 0.5,
            //         color:'rgba(209,126,23,.8)',
            //     }
            // }
            
            // ]

            const series = data.map(it => {
                return {
                    name:it.name,
                    value: it.value,
                    itemStyle: {
                        opacity: 0.5,
                        color:it.itemColor,
                    }
                }
            })
            let option =getPie3D(series,2);
           
            chart.setOption(option);
        }
    }, [data])
    return (

        <div className={styles.widgetPie}>
            <img src={url} alt="" width='100%' />
            <div className={styles.pie_chart} id={'pie_chart' + id}>

            </div>
        </div>
    )
}

export default PieWidget